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org.apache.commons.math3.util</FONT>
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Class Pair&lt;K,V&gt;</H2>
<PRE>
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
  <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.commons.math3.util.Pair&lt;K,V&gt;</B>
</PRE>
<DL>
<DT><DT><B>Type Parameters:</B><DD><CODE>K</CODE> - Key type.<DD><CODE>V</CODE> - Value type.</DL>
<DL>
<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../../org/apache/commons/math3/optimization/PointValuePair.html" title="class in org.apache.commons.math3.optimization">PointValuePair</A>, <A HREF="../../../../../org/apache/commons/math3/optim/PointValuePair.html" title="class in org.apache.commons.math3.optim">PointValuePair</A>, <A HREF="../../../../../org/apache/commons/math3/optimization/PointVectorValuePair.html" title="class in org.apache.commons.math3.optimization">PointVectorValuePair</A>, <A HREF="../../../../../org/apache/commons/math3/optim/PointVectorValuePair.html" title="class in org.apache.commons.math3.optim">PointVectorValuePair</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>Pair&lt;K,V&gt;</B><DT>extends <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL>
</PRE>

<P>
Generic pair.
 <br/>
 Although the instances of this class are immutable, it is impossible
 to ensure that the references passed to the constructor will not be
 modified by the caller.
<P>

<P>
<DL>
<DT><B>Since:</B></DT>
  <DD>3.0</DD>
<DT><B>Version:</B></DT>
  <DD>$Id: Pair.java 1422313 2012-12-15 18:53:41Z psteitz $</DD>
</DL>
<HR>

<P>

<!-- ======== CONSTRUCTOR SUMMARY ======== -->

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<TD><CODE><B><A HREF="../../../../../org/apache/commons/math3/util/Pair.html#Pair(K, V)">Pair</A></B>(<A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="type parameter in Pair">K</A>&nbsp;k,
     <A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="type parameter in Pair">V</A>&nbsp;v)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Create an entry representing a mapping from the specified key to the
 specified value.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../../org/apache/commons/math3/util/Pair.html#Pair(org.apache.commons.math3.util.Pair)">Pair</A></B>(<A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="class in org.apache.commons.math3.util">Pair</A>&lt;? extends <A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="type parameter in Pair">K</A>,? extends <A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="type parameter in Pair">V</A>&gt;&nbsp;entry)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Create an entry representing the same mapping as the specified entry.</TD>
</TR>
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<!-- ========== METHOD SUMMARY =========== -->

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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/commons/math3/util/Pair.html#equals(java.lang.Object)">equals</A></B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;o)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Compare the specified object with this entry for equality.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="type parameter in Pair">K</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/commons/math3/util/Pair.html#getFirst()">getFirst</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the first element of the pair.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="type parameter in Pair">K</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/commons/math3/util/Pair.html#getKey()">getKey</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the key.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="type parameter in Pair">V</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/commons/math3/util/Pair.html#getSecond()">getSecond</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the second element of the pair.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="type parameter in Pair">V</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/commons/math3/util/Pair.html#getValue()">getValue</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the value.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/commons/math3/util/Pair.html#hashCode()">hashCode</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Compute a hash code.</TD>
</TR>
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<!-- ========= CONSTRUCTOR DETAIL ======== -->

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<A NAME="Pair(java.lang.Object,java.lang.Object)"><!-- --></A><A NAME="Pair(K, V)"><!-- --></A><H3>
Pair</H3>
<PRE>
public <B>Pair</B>(<A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="type parameter in Pair">K</A>&nbsp;k,
            <A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="type parameter in Pair">V</A>&nbsp;v)</PRE>
<DL>
<DD>Create an entry representing a mapping from the specified key to the
 specified value.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>k</CODE> - Key (first element of the pair).<DD><CODE>v</CODE> - Value (second element of the pair).</DL>
</DL>
<HR>

<A NAME="Pair(org.apache.commons.math3.util.Pair)"><!-- --></A><H3>
Pair</H3>
<PRE>
public <B>Pair</B>(<A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="class in org.apache.commons.math3.util">Pair</A>&lt;? extends <A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="type parameter in Pair">K</A>,? extends <A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="type parameter in Pair">V</A>&gt;&nbsp;entry)</PRE>
<DL>
<DD>Create an entry representing the same mapping as the specified entry.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>entry</CODE> - Entry to copy.</DL>
</DL>

<!-- ============ METHOD DETAIL ========== -->

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<A NAME="getKey()"><!-- --></A><H3>
getKey</H3>
<PRE>
public <A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="type parameter in Pair">K</A> <B>getKey</B>()</PRE>
<DL>
<DD>Get the key.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the key (first element of the pair).</DL>
</DD>
</DL>
<HR>

<A NAME="getValue()"><!-- --></A><H3>
getValue</H3>
<PRE>
public <A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="type parameter in Pair">V</A> <B>getValue</B>()</PRE>
<DL>
<DD>Get the value.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the value (second element of the pair).</DL>
</DD>
</DL>
<HR>

<A NAME="getFirst()"><!-- --></A><H3>
getFirst</H3>
<PRE>
public <A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="type parameter in Pair">K</A> <B>getFirst</B>()</PRE>
<DL>
<DD>Get the first element of the pair.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the first element of the pair.<DT><B>Since:</B></DT>
  <DD>3.1</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="getSecond()"><!-- --></A><H3>
getSecond</H3>
<PRE>
public <A HREF="../../../../../org/apache/commons/math3/util/Pair.html" title="type parameter in Pair">V</A> <B>getSecond</B>()</PRE>
<DL>
<DD>Get the second element of the pair.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the second element of the pair.<DT><B>Since:</B></DT>
  <DD>3.1</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
equals</H3>
<PRE>
public boolean <B>equals</B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;o)</PRE>
<DL>
<DD>Compare the specified object with this entry for equality.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A></CODE> in class <CODE><A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>o</CODE> - Object.
<DT><B>Returns:</B><DD><code>true</code> if the given object is also a map entry and
 the two entries represent the same mapping.</DL>
</DD>
</DL>
<HR>

<A NAME="hashCode()"><!-- --></A><H3>
hashCode</H3>
<PRE>
public int <B>hashCode</B>()</PRE>
<DL>
<DD>Compute a hash code.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A></CODE> in class <CODE><A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the hash code value.</DL>
</DD>
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